• synonyms


[koop, koo p]
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  1. an enclosure, cage, or pen, usually with bars or wires, in which fowls or other small animals are confined for fattening, transportation, etc.
  2. any small or narrow place.
  3. Slang. a prison.
  4. Sometimes Facetious. a cooperative, especially the cooperative bookstore of a college or university.
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verb (used with object)
  1. to place in or as if in a coop; confine narrowly (often followed by up or in).
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verb (used without object)
  1. Slang. (of a police officer) to park and sleep inside one's patrol car while on duty.
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  1. fly the coop, Informal. to run off; depart abruptly; escape: We stopped to see my sister, but she'd flown the coop.
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Origin of coop

1250–1300; Middle English coupe basket, perhaps < Scandinavian; compare Norwegian kaup wooden can; akin to Old English cȳpa basket
Related formsun·coop, verb (used with object)
Can be confusedco-op coop co-opt coupe.


[noun, adverb koh-op; verb koh-op, koh-op]
  1. a cooperative store, dwelling, program, etc.
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verb (used with object), co-oped or co-opped, co-op·ing or co-op·ping.
  1. to place in a cooperative arrangement, especially to convert (an apartment or building) to a cooperative.
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  1. (of a game, especially a video game) cooperative, requiring players to work together to achieve a common objective:co-op play modes;co-op multiplayer games.
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  1. go co-op, to convert to a cooperative: Our apartment building is going co-op.
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Origin of co-op

First recorded in 1860–65; shortened form
Related formsco-op·er, noun
Can be confusedco-op coop co-opt coupe


or co-op

  1. cooperative.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for coop

Contemporary Examples

Historical Examples

  • Shall I go and tell the goose girl to hunt the turkeys into the coop first?

    Funny Big Socks

    Sarah L. Barrow

  • They put us in the coop for a couple of days, and then the consul got us out.

    Mayflower (Flor de mayo)

    Vicente Blasco Ibez

  • Then they coop us up at home and expect us to let them run the world to suit themselves.

    In a Little Town

    Rupert Hughes

  • He'd started at the Coop with a deck of cards; now he was returning with a club.

    Police Your Planet

    Lester del Rey

  • And when she subsequently flew the coop—dash this cold of mine!

    The Dop Doctor

    Clotilde Inez Mary Graves

British Dictionary definitions for coop


  1. a cage or small enclosure for poultry or small animals
  2. a small narrow place of confinement, esp a prison cell
  3. a wicker basket for catching fish
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  1. (tr; often foll by up or in) to confine in a restricted area
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Word Origin

C15: probably from Middle Low German kūpe basket, tub; related to Latin cūpa cask, vat



  1. a cooperative, cooperative society, or shop run by a cooperative society
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the internet domain name for
  1. a cooperative
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abbreviation for
  1. cooperative
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for coop


"small cage for poultry," mid-14c., from Old English cype, cypa "basket, cask," akin to Middle Dutch kupe, Swedish kupa, and all probably from Latin cupa "tub, cask," from PIE *keup- "hollow mound" (see cup (n.)).

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1560s, from coop (n.). Related: Cooped; cooping.

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1861, abbreviation of cooperative. The hyphen is needed to avoid confusion with coop (n.).

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Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with coop


see fly the coop.

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The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.